diff --git a/annotation/src/main/java/lcsb/mapviewer/annotation/cache/XmlSerializer.java b/annotation/src/main/java/lcsb/mapviewer/annotation/cache/XmlSerializer.java
index 37bf7e7338899ed5eada22585f1c275d7f3d22cb..4f66ee023b287bb3b5f96540c53b103197733e0a 100644
--- a/annotation/src/main/java/lcsb/mapviewer/annotation/cache/XmlSerializer.java
+++ b/annotation/src/main/java/lcsb/mapviewer/annotation/cache/XmlSerializer.java
@@ -21,6 +21,10 @@ import org.w3c.dom.Node;
  *          type of the object to serialize
  */
 public class XmlSerializer<T> {
+	
+	/**
+	 * Default class logger.
+	 */
 	private final Logger			 logger	= Logger.getLogger(XmlSerializer.class);
 
 	/**